Air Quality Forecast Guidance

Displayed below are NOAA-EPA Air Quality Forecast Guidance values for
latitude: 36.71 N, longitude: 118.41 W.
Ozone concentrations are presented in parts per billion (PPB).
Public comments and suggestions are encouraged.

A FAQ page is available.
More information...
24Hr Maximum
Ending
Maximum 1 Hour Average Ozone
Concentration (PPB)*
Maximum 8 Hour Average Ozone
Concentration (PPB)*
Tomorrow
(Ending 09/27, 4Z)
52
50
*Due to grid interpolation methods, the maximum 1- and 8-hour ozone concentration values may have
values slightly higher or lower than those of the corresponding hourly ozone concentrations.

Ozone
Ending Time
1 Hour Average Ozone
Concentration (PPB)

12Z Model Run
8 Hour Average Ozone
Concentration (PPB)

12Z Model Run
Sat, 26 Sep  03 PM
52
47
Sat, 26 Sep  04 PM
51
48
Sat, 26 Sep   05 PM
49
50
Sat, 26 Sep   06 PM
48
50
Sat, 26 Sep   07 PM
48
50
Sat, 26 Sep   08 PM
43
49
Sat, 26 Sep   09 PM
40
48
Sat, 26 Sep   10 PM
39
46
Sat, 26 Sep   11 PM
41
45
Sun, 27 Sep   12 AM
42
44
Sun, 27 Sep   01 AM
43
43
Sun, 27 Sep   02 AM
42
42
Sun, 27 Sep   03 AM
40
41
Sun, 27 Sep   04 AM
39
41
Sun, 27 Sep   05 AM
38
41
Sun, 27 Sep   06 AM
38
40
Sun, 27 Sep   07 AM
37
40
Sun, 27 Sep   08 AM
34
39
Sun, 27 Sep   09 AM
33
38
Sun, 27 Sep   10 AM
37
37
Sun, 27 Sep   11 AM
42
37
Sun, 27 Sep   12 PM
46
38
Sun, 27 Sep   01 PM
47
39
Sun, 27 Sep   02 PM
48
40
Sun, 27 Sep   03 PM
49
42
Sun, 27 Sep   04 PM
49
44
Sun, 27 Sep   05 PM
47
46
Sun, 27 Sep   06 PM
43
46
Sun, 27 Sep   07 PM
44
47
Sun, 27 Sep   08 PM
45
46
Sun, 27 Sep   09 PM
40
46
Sun, 27 Sep   10 PM
36
44
Sun, 27 Sep   11 PM
32
42
Mon, 28 Sep   12 AM
32
40
Mon, 28 Sep   01 AM
33
38
Mon, 28 Sep   02 AM
33
37
Mon, 28 Sep   03 AM
32
35
Mon, 28 Sep   04 AM
32
34
Mon, 28 Sep   05 AM
34
33
Smoke
Ending Time
(Local Time)
1 Hour Surface Smoke (µg/m³)
06Z Model Run
1 Hour Column-Integrated
Smoke (µg/m³)

06Z Model Run
Sat, 26 Sep  03 PM
81
142
Sat, 26 Sep  04 PM
95
130
Sat, 26 Sep  05 PM
147
135
Sat, 26 Sep  06 PM
26
100
Sat, 26 Sep  07 PM
0
85
Sat, 26 Sep  08 PM
0
76
Sat, 26 Sep  09 PM
0
92
Sat, 26 Sep  10 PM
0
116
Sat, 26 Sep  11 PM
0
124
Sun, 27 Sep  12 AM
0
119
Sun, 27 Sep  01 AM
0
145
Sun, 27 Sep  02 AM
0
155
Sun, 27 Sep  03 AM
0
126
Sun, 27 Sep  04 AM
0
147
Sun, 27 Sep  05 AM
0
155
Sun, 27 Sep  06 AM
0
151
Sun, 27 Sep  07 AM
0
140
Sun, 27 Sep  08 AM
0
129
Sun, 27 Sep  09 AM
0
132
Sun, 27 Sep  10 AM
4
136
Sun, 27 Sep  11 AM
1
141
Sun, 27 Sep  12 PM
0
112
Sun, 27 Sep  01 PM
11
88
Sun, 27 Sep  02 PM
0
72
Sun, 27 Sep  03 PM
9
71
Sun, 27 Sep  04 PM
0
77
Sun, 27 Sep  05 PM
13
92
Sun, 27 Sep  06 PM
49
137
Sun, 27 Sep  07 PM
0
175
Sun, 27 Sep  08 PM
0
205
Sun, 27 Sep  09 PM
0
245
Sun, 27 Sep  10 PM
0
242

National Weather Service Air Quality Program Page
Environmental Protection Agency AirNow Forecast Page
Graphical Air Quality Forecast Guidance
FAQ


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